spring boot 组件扫描的问题

Question

我正在编写具有两个实体类教师和部门的 Spring Boot 应用程序。我正在使用 JPA 和 H2 内存数据库。当我运行应用程序表时没有在 h2 数据库中创建。我已经使用 @componentScan 注释指定要扫描的包，但我认为 spring 没有找到实体类的位置。

应用类-

package com.H2DatabaseDemo;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication

@ComponentScan(basePackages="com.H2DatabaseDemo")

public class H2DatabaseDemoApplication {

    public static void main(String[] args) {

        SpringApplication.run(H2DatabaseDemoApplication.class, args);

    }

}

作者实体-

package com.H2DatabaseDemo.model;

import java.util.List;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.OneToMany;

@Entity

public class Author {

    @Id

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private long id;

    private String title;

    private String body;

    public Author() {}

    public long getId() {

        return id;

    }

    public void setId(long id) {

        this.id = id;

    }

    public String getTitle() {

        return title;

    }

    public void setTitle(String title) {

        this.title = title;

    }

    public String getBody() {

        return body;

    }

    public void setBody(String body) {

        this.body = body;

    }

}

邮政实体-

package com.H2DatabaseDemo.model;

import java.awt.List;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.ManyToOne;

@Entity

public class Post {

    @Id

    @GeneratedValue(strategy=GenerationType.IDENTITY)

    private long id;

    private String name;

    public Post() {}

    public Post(long id, String name) {         

        this.id = id;

        this.name = name;           

    }    

    public long getId() {

        return id;

    }

    public void setId(long id) {

        this.id = id;

    }